Input a command "dnf install virt-viewer" to install "Remote Viewer" and start it like follows.

[2]

Input [spice://(server name or IP address):(port)] and click "Connect" button.

[3]

Input password you set and click the "OK" button.

[4]

After successing authentication, it's possible to connect like follows.

SPICE Client : Windows

SPICE client for Windows is also provided, so it's possible to connect from Windows.
This example uses Windows 10 for SPICE client.

[5]

Download Virt-Viewer Installer from the site below.
⇒ http://www.spice-space.org/download.html
After installing and starting "Virt-Viewer", following screen is shown.
Then, input "spice://(server name or IP address):(Port)" in the URL field and click "Connect" button.

[6]

Input password you set and click the "OK" button.

[7]

After successing authentication, it's possible to connect like follows.